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经营范围
发明名称
Magnetic tape file protection arrangement
摘要
申请公布号
US3335410(A)
申请公布日期
1967.08.08
申请号
US19650446196
申请日期
1965.04.07
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
BASKIN JOHN Y.;MICHAEL FRANK R.
分类号
G11B27/34
主分类号
G11B27/34
代理机构
代理人
主权项
地址
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